Dump-car door



May s, 1923.

G. G. GILPIN DUMP CAR DooR origihal Filed Aug.' zo, 1919 ?atented May 8, i923. l

'lil

Gamin e. einem, or nivrfnsinn, insurers, .assitance ro Union Meran rnonno'rs' COMPANY, or ciiicaeo, riscrivere, iiiconronaaion or Dniiawann.

@UME-CAR DOOR.

original applications flied august so. lele, serial No. 320.792 eww raient' uaiasaoss, dated May 31,

1921), and April 7, 1921, sei-iai no. aliases.'

No. 570,245. i'

of Illinois, have. invented certain new and useful Improvements in Dump-Car lDoors,

of which. the following isa specification.

My invention relates to .railway cars of the drop-bottom ordumping type, and has for its object to provide animproved sheet metal door having reinforcements which gives the door the desired strength and gidity, and which, furthermore, do not hinder the free discharge of the ycargo 4when the door yis so arranged on the car that the load rpasses over it in discharging. The doors of carsl of the dumping type areusually made of sheet metal and are subjected to severe shocks and pressures due to the impact of the cargo in loading and theweight of the material onthedoor, and other causes,`and these shocks and pressures tend to4 deflect and warp the doors so that in time they are likely not to properly close. viiny considerable warping may also .interfere with the movements of the door.` j y The invention consists .of the new and improved constructions, arrangements and devices, to be hereinafter lnore specifically described and claimed, for carrying out the' above stated objects and such other incldental objects as will appear fromv the following description.

The invention .is illustrated lll certain preferred embodiments,`ln the accompanying drawing, wherein Fig. 1 is a fragmentary plan view of'a railway car of the general service type,

provided with a drop-bottom panel or door made in accordance with my invention;

Fig. 2 is a vertical section taken on line 2--2 of Fig. 1,-and j Fig. 3 is a plan view ofla' modified construction of door panels. f

Like characters of reference designate like parts throughout the several figures of the drawing.

Reference will be made first to Figs. 1 and 2 of the drawing wherein I have shown a door panel constructed in accordance withmy invention applied to a car of the general service type. It will be obvious, how? @iv-ded and this application filed June 22, 1922. Serial ever, that these doorfstructures shown in in theiruse to these figures are not limited cars of this particular type, In Figsal and` 2 the lside wall of a railway car is indicated by the reference character 10, the center-sill structure by the reference character 11, and thel cross members of the underframe reference characters 12,12. r" ,l

The door consists of a sheet metal panel 13, provided with downwardly projecting flanges 14. These flanges are preferably formed integral with the body of the sheet by pressing the margins of the sheet out'- wardly from the body portion so as to form a continuous rigidifying rib around the` vmargins of the sheet.

The doormaly be hinged to the bodyof the car in any suitable *'*f manner... In `the drawingI have shown it hinged tothe center sillstructure 11 by. a

pair ofhinges 15, 15,;the strapv portions 16,'

16 of which extend substantially across the door panel. The hinge straps may lbeisecured tothe door in any suitable! manner, for example by rivets 17.` In order to"p'ro vide'the `marginal portions ofthe door, outside tliejhinges, with the necessary rigidity toresist the tendency which the door may have to sag under thepressure of the cargo, or to be distorted by the various other stresses to which it isy subjected, andv to also reinforce and rigidify the structure through-v out, the door panel is formed with a pluraln ity of corrugations 18 arranged preferably.

in two sets 19, y19a across the hinge straps 16, 1,6. The corrugations of each set are paral`- lel one to another and extend diagonally outward from the hinged edge and middle lportion 20 of the panel towardvlthe lateral edges of the door. The corrugations 18 are pressed, preferably so as to project above the plane of the door and terminate within the edges of the panel at pointsadjacentthe marginal flangel 14. By forming the door panel with diagonally disposed corru'gations, of the character shown in the drawing, it isefiectively reinforced without such reinforcements materially interfering withv the dischargey of bulk material such as sand, gravel, coal or the like, when the doors are lowered to their discharging position.

In Fig. 3 I have shown a modified construction of door panel in which the corru-v gations, designated 18a, instead of being arranged in two sets of different angular disposition, as in Fig. l, all extend in the saine diagonal direction. That is, the eorrugations 18a in the arrangement are preferably parallel with eaeh other, and extend diagonally across the door sheet from one margin to another. The marginal portions and hinge strapv lconstructions of the modification shown in this ligure may be substantially the same as the Corresponding oonstruetions shown in Figs. l and This form of the invention is not speoiiieally claimed herein, being the sulojeot matter ot a divisional application led `fletober l0, `1922, Serial No. 593,505. v

rlhis application is a division, through my eo-pendingapplication Serial No. 59,305. tiled April 7th, i921, of my application for Letters Patent Serial No. 320,792 filed ,1'\ ugust 30, i919, now patented as No. 1,380,055, klilay 3l, 192

fl Claim: v l. El sheet metal door for a railway ear of the dumping type having hinge members extending across the nnder side of the door and provided with a plurality of diagonally disposed corrugations which extend Yfrom the hinged edge of the door toward the lateral and opposite edges thereof, certain of said eorrugations crossing said hinge.

v2. la sheet metal door for a railway ear of the dumping type, provided with hinges having hinge members extending across the under side of the door so as to strengthen the same, and formed with two sets of diagonally disposed eorrugations which extend Jrom the hinged edge of the door toward the lateral edges and the edge opposite said hinged edge. v

3. A sheet metal door "for a railway ear oil the dumping type adapted to be hinged to the bottom of the ear and formed with two sets of diagonally disposedl corrugations which extend from the hinged edge and the center portion of the door outwardly toward the lateral edges and the edge opposite said hinged edge.

si. A sheet metal door for a railway Car of the dumping type adapted toghe hinged to the bottoni ef the oar and formed with two sets of diagonally disposed parallel oorrugations which extend frein the hinged edge andv the center portion of the door outwardly toward 'the lateral edges and the edge opposite said hinged edge.

5. A sheet metal door for a railway car of the dumping type adapted to be hinged to the bottom of the ear, provided with angular marginal flanges and termed with t vo sets ol? diagonally disposed eorrugations which extend from the hinged edge and the oenter portion of thedoor outwardly 'toward the lateral edges and the edge opposite said hinged edge. y i 1 6. A sheet metal door for a railway year of the dumping type vadapted tok be hinged to the bottom of the oar comprising a panel formed with ka plurality of eorrugations' which terminate within the edges of the panel and extend from the hinged edge and Center portion of the panel outwardly toward the lateral edges and the edge opposite said hinged edge.

GARTH e. siLPni.v 

